What undiscovered critters are scurrying around in the Bay Area? Locals will have a chance to help answer that question March 28-29 at National Geographic's 4th annual BioBlitz event, where scientists and the public team up to index the many species living along the 80,000 acres of Northern California shoreline.

Host: Dave Iverson

Guests:

John Francis, biologist and vice president of research, conservation and exploration at National Geographic

Allen Fish, director of the Golden Gate Raptor Observatory for the Golden Gate National Parks Conservancy